zomg.. people have made walk-throughs and everything.
Yeah, there is a 'middle' path,I hope someone other than akutsi found it.. and once you collect the three keys (from beating the bosses) that door with the green lock in the second frame on the left? you'll be able to open that, or it'll become a platform moving up, or something. Haven't decided yet.
@Zaraki: The first glitch you posted.. with the plane scene, you shot the plane down too quickly: That's not a bug, if you shoot the plane before it destroys the platforms out of that room, you're stuck.
The spike bug I already knew about.. couldn't quite work out what was causing, changing the player's mask just messed up more stuff so I'll work it out later.
Watching Akutsi's vid.. he took a shotcut in one section I hadn't anticipated.. so I gotta try and stop the player from doing that.